<!DOCTYPE html>
<html>

<head>
    <meta charset="utf-8">
    <title>layui</title>
    <meta name="renderer" content="webkit">
    <meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
    <meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1">
    <link rel="stylesheet" href="../lib/layui/css/layui.css" media="all">
    <!-- 注意：如果你直接复制所有代码到本地，上述css路径需要改成你本地的 -->
</head>

<body>

    <blockquote class="layui-elem-quote">文件批量上传时，计算机资源消耗较大，请求上传过程中浏览器卡顿，这属于正常现象。</blockquote>

    <fieldset class="layui-elem-field layui-field-title" style="margin-top: 30px;">
        <legend>资源上传：向资源服务器上传文件列表</legend>
    </fieldset>

    <div class="layui-upload">
        <button type="button" class="layui-btn layui-btn-normal" id="testList">选择多文件</button>
        <div class="layui-upload-list">
            <table class="layui-table">
                <thead>
                    <tr>
                        <th>文件名</th>
                        <th>大小</th>
                        <th>状态</th>
                        <th>操作</th>
                    </tr>
                </thead>
                <tbody id="demoList"></tbody>
            </table>
        </div>
        <button type="button" class="layui-btn" id="testListAction">开始上传</button>
    </div>

    <input class="layui-hide" id='folderid' value="">
    <script src="../lib/layui/layui.js" charset="utf-8"></script>
    <!-- 注意：如果你直接复制所有代码到本地，上述js路径需要改成你本地的 -->
    <script>
        layui.use('upload', function () {
            var $ = layui.jquery,
                upload = layui.upload;

            //多文件列表示例
            var demoListView = $('#demoList'),
                uploadListIns = upload.render({
                    elem: '#testList',
                    url: '/fdm/upload/',
                    exts: 'jpg|jpeg|png|bmp',
                    accept: 'file',
                    multiple: true,
                    auto: false,
                    bindAction: '#testListAction',
                    headers: {
                        fid: $('#folderid').val()
                    }, //利用headers的fid将文件夹ID转入后台调用
                    choose: function (obj) {
                        var files = this.files = obj.pushFile(); //将每次选择的文件追加到文件队列
                        //读取本地文件
                        obj.preview(function (index, file, result) {
                            var tr = $(['<tr id="upload-' + index + '">', '<td>' + file.name +
                                '</td>', '<td>' + (file.size / 1014).toFixed(1) +
                                'kb</td>', '<td>等待上传</td>', '<td>',
                                '<button class="layui-btn layui-btn-xs demo-reload layui-hide">重传</button>',
                                '<button class="layui-btn layui-btn-xs layui-btn-danger demo-delete">删除</button>',
                                '</td>', '</tr>'
                            ].join(''));

                            //单个重传
                            tr.find('.demo-reload').on('click', function () {
                                obj.upload(index, file);
                            });

                            //删除
                            tr.find('.demo-delete').on('click', function () {
                                delete files[index]; //删除对应的文件
                                tr.remove();
                                uploadListIns.config.elem.next()[0].value = ''; //清空 input file 值，以免删除后出现同名文件不可选
                            });

                            demoListView.append(tr);
                        });
                    },
                    done: function (res, index, upload) {
                        console.log(res);
                        if (res.code == 0) { //上传成功
                            var e=this;
                            //将资源文件保存至数据库
                            $.ajax({
                                url: '/fdm/addresource',
                                method: 'post',
                                data: {
                                    resourcename:res.data.resourcename,
                                    folderid:res.data.folderid
                                },
                                dataType: 'JSON',
                                success: function (r) {
                                    if (r.code == 1) {
                                        var tr = demoListView.find('tr#upload-' + index),
                                            tds = tr.children();
                                        tds.eq(2).html(
                                            '<span style="color: #5FB878;">上传成功</span>'
                                        );
                                        tds.eq(3).html(''); //清空操作
                                        return delete e.files[index]; //删除文件队列已经上传成功的文件
                                    } else {
                                        layer.msg('资源保存失败');
                                    }
                                },
                                error: function (data) {}
                            })

                        }
                        this.error(index, upload);
                    },
                    error: function (index, upload) {
                        var tr = demoListView.find('tr#upload-' + index),
                            tds = tr.children();
                        tds.eq(2).html('<span style="color: #FF5722;">上传失败</span>');
                        tds.eq(3).find('.demo-reload').removeClass('layui-hide'); //显示重传
                    }
                });

            //绑定原始文件域
            upload.render({
                elem: '#test20',
                url: '/upload/',
                done: function (res) {
                    console.log(res)
                }
            });

        });
    </script>

</body>

</html>